SB2019121925 - Improper authorization in Synapse
Published: December 19, 2019 Updated: January 9, 2020
Security Bulletin ID
SB2019121925
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Authorization (CVE-ID: N/A)
CWE-ID: CWE-285 - Improper Authorization
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to gain unauthorized access to certain functionality.
The vulnerability exists due to software does not check if the even belongs to a certain room before returning it. A remote authenticated user can gain access to events that belong to another room.
Remediation
Install update from vendor's website.